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Particle-induced synovitis in the subgroups
| Bearing surface | Number of hips | Hips with synovitis | Percentage | Average volume (± standard deviation) |
|---|---|---|---|---|
| Metal-on-polyethylene | 7 | 2 | 29% | 1038 mm3 (± 2610 mm3) |
| Ceramic-on-ceramic | 12 | 4 | 33% | 805 mm3 (± 1379 mm3) |
| Ceramic-on-polyethylene | 14 | 7 | 50% | 691 mm3 (± 1041 mm3) |
| Total | 33 | 13 | 39% | 806 mm3 (± 1546 mm3) |
